C. the vaccine can reduce the cases of dengue by 10% in total

D. dengue fever will spread much more quickly if people refuse to get vaccinated

4. What's the best title of the passage?

A. Ways of Preventing Dengue Fever

B. Dengue Fever Can be Completely Cured

C. New Dengue Vaccine Could Cause Serious Illness

D. The Drug Dengvaxia Is Widely Used Throughout the World

答案与解析

【文章大意】　一项最新科学实验表明：目前唯一的预防登革热病毒的疫苗Dengvaxia存在诸多问题。

1. 答案　C

解析　细节理解题。根据第三段中的Several countries - including Brazil, Mexico, Costa Rica, Paraguay and the Philippines - have already approved use of the drug.可知，这种疫苗已经在巴西、墨西哥、哥斯达黎加、巴拉圭和菲律宾5个国家开始使用，故C项正确。

2. 答案　C

解析　细节理解题。根据第五段中的They say they are concerned that people who get infected a second time after the vaccine can get severely sick.可知，研究家们发现，对于注射了登革热疫苗之后再次感染的人群而言，他们的病情会变得更加严重。

3. 答案　A

解析　判断推理题。根据最后一段表述可知，在登革热病毒盛行的地区国家，使用这种疫苗应该没有什么问题，但在感染率仅有10%的国家，建议人们在注射这种疫苗之前进行一次严格的检查以确定是否以前感染过这种病毒。由此可知A项正确。其它各项表述均与原文不符。

4. 答案　C

解析　主旨大意题。本文是一篇新闻报道，讲述了一项最新的科学实验结果：登革热疫苗Dengvaxia存在问题，再结合文章的首句可知C项正确。

Ⅱ.阅读填空

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。

(2017·江西八校联考)Most of you love watching movies. They can be funny, sad, imaginative, inspiring, and so much more! There are so many possibilities and so many great movies to watch!

The making of a movie usually begins with a script(剧本). __1__ The producer is the person who is responsible for coordinating(协调)aspects of the film like budget and scheduling. The producer plans out how the project will be carried out and he usually starts by hiring a director!

__2__ The director will usually identify themes or feelings that he or she wants the movie to